ANTLR (ANother Tool for Language Recognition) is a language tool that provides a framework for constructing recognizers, compilers, and translators from grammatical descriptions containing C++, Java, or Sather actions. It is similar to the popular compiler generator YACC, however ANTLR is much more powerful and easy to use. ANTLR-produced parsers are not only highly efficient, but are both human-readable and human-debuggable (especially with the interactive ParseView debugging tool). ANTLR can generate parsers, lexers, and tree-parsers in either C++, Java, or Sather. ANTLR is currently written in Java.

AweMUD is a MUD server for use with fantasy-settings. Features include fully dynamic objects and characters, an advanced scripting system, and custom worlds. The engine will eventually have completely interactive rooms (items can be placed under benches, doors can be destroyed), complex magick, and interactive NPCs.

Beepage is a Unix-based text paging package. Text pages sent by the client over TCP/IP are received by the provided server, which queues and transmits the data to any paging service providers that support the Telocator Alpha-numeric Protocol.

BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.

Condor is a high throughput system, scheduling and providing large amounts of computational power over a long period of time. It provides the efficient use of a large variety of systems, from idle desktop workstations and dedicated clusters to grid systems all over the world, while its incredibly flexible configuration implements and maintains the machine owner's desired policy for the machine's availability.

The dump package contains both dump and restore. Dump examines files in a filesystem, determines which ones need to be backed up, and copies those files to a specified disk, tape or other storage medium. The restore command performs the inverse function of dump; it can restore a full backup of a filesystem. Subsequent incremental backups can then be layered on top of the full backup. Single files and directory subtrees may also be restored from full or partial backups.

Flex is a tool for generating programs that recognize lexical patterns in text.
There are many applications for Flex, including writing compilers in
conjunction with GNU Bison. Flex is a free implementation of the well known Lex
program. It features a Lex compatibility mode, and also provides several new
features such as exclusive start conditions.

gpsd is a daemon that listens to a GPS or Loran
receiver and translates the positional data into a
simplified format that can be more easily used by
other programs, like chart plotters. The package
comes with a sample client that plots the location
of the currently visible GPS satellites (if
available) and a speedometer. It can also use
DGPS/ip.